Rename custom initializers

No need to use a prefix for these.
Updated Gemfile

Now using any version of Rails 3.2, and moving from git to a release for parse-cron.
Add custom initializer for local configuration

Any local application options will be configured here,
including the secret_token for cookies.
Add 'job' view and clean up job controller

Ran the job controller through rubocop until the worst warnings
disappeared. Also cleaned up some of the methods (last/next, last_seen).